118321055 has 4 divisors (see below), whose sum is σ = 141985272. Its totient is φ = 94656840.

The previous prime is 118321031. The next prime is 118321061. The reversal of 118321055 is 550123811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550123811 = 43 ⋅12793577.

It is not a de Polignac number, because 118321055 - 2¹² = 118316959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11832101 + ... + 11832110.

It is an arithmetic number, because the mean of its divisors is an integer number (35496318).

Almost surely, 2^118321055 is an apocalyptic number.

118321055 is a deficient number, since it is larger than the sum of its proper divisors (23664217).

118321055 is an equidigital number, since it uses as much as digits as its factorization.

118321055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23664216.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 118321055 is about 10877.5482072018. The cubic root of 118321055 is about 490.9312499922.

Adding to 118321055 its reverse (550123811), we get a palindrome (668444866).

The spelling of 118321055 in words is "one hundred eighteen million, three hundred twenty-one thousand, fifty-five".